Prototype KG‑aware adaptation of the BioPortal interface. Graph pages generated from live KG‑Registry metadata; tool links go to the live BioPortal.
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BAO

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BioAssay Ontology

KGXBioPortal ontologyv2.8.19CC BY-SA 4.0
Visibility: Public

A KGX transformation of the BioPortal ontology BioAssay Ontology (BAO), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them. The base graph is the ontology on its own, imports stripped; the full graph, where built, has the import closure merged in.

Base graph at a glance

6,171
Nodes
7,518
Edges
2.8.19
Version
2026-09-14
Transformed

Products & downloads

Base
KGX base graph (imports stripped)
BAO.tar.gz
6K nodes · 8K edges
Full
KGX full graph (imports merged in)
BAO_full.tar.gz
12K nodes · 26K edges

The base graph contains BAO_nodes.tsv and BAO_edges.tsv. The full graph contains BAO_full_nodes.tsv and BAO_full_edges.tsv: this ontology plus the 2 it imports (and their imports in turn), merged by ROBOT. Use it when the imported terms matter; the base graph merges more cleanly with other graphs. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Imports 2

What this ontology pulls in through owl:imports. An import that is itself a BioPortal ontology links to its page here; a module of one links to the ontology it belongs to; anything else links out, or is named by its namespace when it is not a web address. The base graph leaves all of these out; the full graph, where built, has them merged in.

Biolink categories 9 categories across 6,171 nodes

NamedThing6,103
BiologicalProcessOrActivity49
CellularComponent12
Publication2
AnatomicalEntity1
CellLine1
Disease1
InformationContentEntity1
LifeStage1

An item carrying more than one category is counted under each, so these counts can add up to more than the total.

How they were assigned 68 of 6,171 nodes (1.1%)

10is a seed term whose Biolink class is not in doubt
58inherits from a seed term above it in the hierarchy

Biolink categories 1 category across 7,518 edges

Association7,518

An item carrying more than one category is counted under each, so these counts can add up to more than the total.